A British firm that specializes in supplying solar systems (on-board and propulsion power) for canal cruisers (narrow boats and wider).
There are apparently quite a few electric powered narrowboats cruising the U.K. canals now… slick.Â
Thanks to a post on the Electric Boats mailing list for the pointer and some ballpark info:
Ball park figures are about 3Kwatts to drive a 40 foot boat at the canal speed limit of 4mph. about 8 Kwatts for river use. Reckoning on about 1K watt hour from a 100Amp hour battery its easy to calculate how many batteries you need for a given range.